Zobrazeno 1 - 10
of 419
pro vyhledávání: '"Piccitto, A."'
Publikováno v:
Phys. Rev. B 109 (22), 224309, 2024
We study the performances of an imperfect quantum many-body Otto engine based on free-fermion systems. Starting from the thermodynamic definitions of heat and work along ideal isothermal, adiabatic, and isochoric transformations, we generalize these
Externí odkaz:
http://arxiv.org/abs/2403.11645
Publikováno v:
Eur. Phys. J. B 97, 90 (2024)
We consider a free-fermion chain undergoing dephasing, described by two different random-measurement protocols (unravelings): a quantum-state-diffusion and a quantum-jump one. Both protocols keep the state in a Slater-determinant form, allowing to ad
Externí odkaz:
http://arxiv.org/abs/2402.06597
Publikováno v:
Scientific Reports 14 (1), 16681 (2024)
Quantum control techniques represent one of the most efficient tools to attain high-fidelity quantum operations and a convenient approach for quantum sensing and quantum noise spectroscopy. In this work, we investigate dynamical decoupling while proc
Externí odkaz:
http://arxiv.org/abs/2401.05766
Publikováno v:
McKinsey Quarterly. 2024, Issue 3, p90-101. 12p. 2 Color Photographs, 3 Graphs.
Publikováno v:
Physical Review B, 108, 104313 (2023)
We study the asymptotic bipartite entanglement entropy of the quantum trajectories of a free-fermionic system, when subject to a continuous nonlocal monitoring. The measurements are described by Gaussian-preserving two-point operators, whose strength
Externí odkaz:
http://arxiv.org/abs/2307.05685
Publikováno v:
Genus, Vol 80, Iss 1, Pp 1-22 (2024)
Abstract Women constitute over half of the global refugee population, yet they are underrepresented among asylum-seeker applicants in Europe. In this study, we analyse asylum application decisions in Italy between 2008 and 2022 using Eurostat data an
Externí odkaz:
https://doaj.org/article/8e7ccc230d4d4bd6924e2f7b921b3f76
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-13 (2024)
Abstract Quantum control techniques are one of the most efficient tools for attaining high-fidelity quantum operations and a convenient approach for quantum sensing and quantum noise spectroscopy. In this work, we investigate dynamical decoupling whi
Externí odkaz:
https://doaj.org/article/654dd374f0db4e7ea789eb3cece9ee2c
Publikováno v:
SciPost Phys. Core 6, 078 (2023)
We explain how to apply a Gaussian-preserving operator to a fermionic Gaussian state. We use this method to study the evolution of the entanglement entropy of an Ising spin chain following a Lindblad dynamics with string measurement operators, focusi
Externí odkaz:
http://arxiv.org/abs/2303.07102
Publikováno v:
New J. Phys. 24 103023 (2022)
We study a four-stroke Otto engine whose working fluid is a quantum Ising chain. The thermodynamic cycle consists in sweeps of the transverse magnetic field occurring in thermal isolation, alternated by thermalisation strokes with reservoirs at diffe
Externí odkaz:
http://arxiv.org/abs/2205.09528
Publikováno v:
Phys. Rev. B 105, 064305 (2022)
We study the dynamics of entanglement in the quantum Ising chain with dephasing dissipation in a Lindblad master equation form. We consider two unravelings which preserve the Gaussian form of the state, allowing to address large system sizes. The fir
Externí odkaz:
http://arxiv.org/abs/2111.11300